Portion of a shoe outsole



FIG. 1 is a front perspective view of a portion of a shoe outsole showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line immediately adjacent to the shaded area represents an unclaimed boundary of the design. The broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. 

The ornamental for a portion of a shoe outsole, as shown and described. 